Amazon.com: Compatible for Samsung Gear S3 Frontier/Classic Case Bezel Cover, Metal Bezel + TPU Protector Bumper Case, Also Fit for 2018 Released Galaxy Watch 46mm/NOT for 2021 Galaxy Watch 4 Classic 46mm :
Samsung Gear S3 Frontier 46 mm Steel Case with Black Silicone Band Smart Watch - Black (SM-R760) for sale online | eBay